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X3F File

This page contains information on the X3F file extension (Sigma Camera RAW Picture File), a popular image file format

File extension.x3f
CategoryImage File
DescriptionX3F is a proprietary RAW image format produced by the camera manufacturer Sigma in conjunction with Foveon Inc. Sigma cameras capture raw information straight from the camera's Foveon sensors when taking a shot which means photos can be captured with the conditions in which they were taken. The Sigma X3F format contains all the information necessary to allow photographers to make final adjustments before exporting the image to a more common format such as JPG or TIFF.
Actions Convert X3F file
View other image file formats
Technical DetailsX3F files are designed to hold all the data associated with a single image, including the image data, thumbnail(s), preview image(s) and text properties. The X3F format is designed to allow modification of file data by appending subsequent information to the file - this allows the file format to be used on write-once media, where earlier data in the file cannot be changed. In the X3F format brightness and color data is kept in a 1:1 ratio without relying on interpolation. X3F files begin Files begin with ASCII signature "FOVb".
Associated programs Adobe Photoshop
Corel Draw
Google Picasa
Developed by Sigma & Foveon Inc.
MIME type  image/x-sigma-x3f
Useful links X3F file format specification
Sigma X3F marketing page
Information about the RAW image format
Convert X3F file

Convert X3F file

Using Zamzar it is possible to convert X3F files to a variety of other formats:

x3f to ai (Adobe Illustrator Artwork)
x3f to bmp (Windows bitmap)
x3f to eps (Encapsulated PostScript)
x3f to gif (Compuserve graphics interchange)
x3f to jpg (JPEG compliant image)
x3f to pcx (Paintbrush Bitmap Image)
x3f to pdf (Portable Document Format)
x3f to png (Portable Network Graphic)
x3f to tga (Truevision Targa Graphic)
x3f to tiff (Tagged image file format)
x3f to wbmp (Wireless Bitmap File Format)
x3f to webp (Lossily compressed image file)

Convert X3F file